Network diagnostics

ABSTRACT

A system that incorporates teachings of the present disclosure may include, for example, a controller to automatically check lower level layer test results of an IPTV or iTV network, automatically retrieve inventory data from an inventory system, automatically retrieve a Layer 4 data from a live router by executing a show Class of Service (COS) interface command, automatically compare a COS value with a value from the inventory system to determine a mismatch, and automatically create an alert if the mismatch exists. Other embodiments are disclosed.

FIELD OF THE DISCLOSURE

The present disclosure relates generally to network analysis and more specifically to automated network fault analysis.

BACKGROUND

Most telecommunication carriers fix faults in their network with technicians who manually monitor alarms or tickets generated by alarm detection systems. When an alarm or ticket appears, technicians typically use network element specific troubleshooting commands to diagnose and fix the fault. As additional services are provided on such networks, more complexities can arise in diagnosing or troubleshooting such networks which can further complicate determining root causes of network failures or faults.

BRIEF DESCRIPTION OF THE DRAWINGS

FIGS. 1-4 depict illustrative embodiments of communication systems that provide media services;

FIG. 5 depicts an illustrative embodiment of a portal interacting with at least one among the communication systems of FIGS. 1-4;

FIG. 6 depicts an illustrative embodiment of a communication device utilized in the communication systems of FIGS. 1-4;

FIG. 7 depict an illustrative embodiment of a network and troubleshooting system operating in portions of the communication systems of FIGS. 1-4;

FIG. 8 depicts an illustrative embodiment of a method operating in portions of the communication systems of FIGS. 1-4;

FIG. 9 depicts another illustrative embodiment of a method operating in portions of the communication systems of FIGS. 1-4;

FIG. 10 is a diagrammatic representation of a machine in the form of a computer system within which a set of instructions, when executed, may cause the machine to perform any one or more of the methodologies discussed herein.

DETAILED DESCRIPTION

One embodiment of the present disclosure can entail a method including steps to automatically check Layer 1, Layer 2, and Layer 3 test results of a network, automatically retrieve inventory data from an inventory system, automatically retrieve a customer's Layer 4 data from a live router by executing a show Class of Service (COS) interface command or show policy interface command, automatically compare a COS value with a value from the inventory system to pinpoint any mismatch, and automatically create an alert if there is a mismatch.

Another embodiment of the present disclosure can entail a method to automatically check lower level layer test results of an IPTV or iTV network, automatically retrieve inventory data from an inventory system, automatically retrieve a Layer 4 data from a live router by executing a show Class of Service (COS) interface command or show policy interface command, automatically compare a COS value with a value from the inventory system to determine a mismatch, and automatically create an alert if the mismatch exists.

Yet another embodiment of the present disclosure can entail a computer-readable storage medium, comprising computer instructions operable to automatically check Layer 1, Layer 2, and Layer 3 test results of an IPTV or iTV network, automatically retrieve inventory data from an inventory system, automatically retrieve a customer's Layer 4 data from a live router by executing a show Class of Service (COS) interface command or show policy interface command, automatically compare a COS value with a value from the inventory system to pinpoint any mismatch, and automatically create an alert if there is a mismatch.

Yet another embodiment of the present disclosure can entail a system having a controller to automatically check lower level layer test results of an IPTV or iTV network, automatically retrieve inventory data from an inventory system, automatically retrieve a Layer 4 data from a live router by executing a show Class of Service (COS) interface command, automatically compare a COS value with a value from the inventory system to determine a mismatch, and automatically create an alert if the mismatch exists.

FIG. 1 depicts an illustrative embodiment of a first communication system 100 for delivering media content. The communication system 100 can represent an Internet Protocol Television (IPTV) broadcast media system. In a typical IPTV infrastructure, there is a super head-end office (SHO) with at least one super headend office server (SHS) which receives national media programs from satellite and/or media servers from service providers of multimedia broadcast channels. In the present context, media programs can represent audio content, moving image content such as videos, still image content, and/or combinations thereof. The SHS server forwards IP packets associated with the media content to video head-end servers (VHS) via a network of aggregation points such as video head-end offices (VHO) according to a common multicast communication method.

The VHS then distributes multimedia broadcast programs via an access network to commercial and/or residential buildings 102 housing a gateway 104 (such as a residential gateway or RG). The access network can represent a bank of digital subscriber line access multiplexers (DSLAMs) located in a central office or a service area interface that provide broadband services over optical links or copper twisted pairs to buildings 102. The gateway 104 distributes broadcast signals to media processors 106 such as Set-Top Boxes (STBs) which in turn present broadcast selections to media devices 108 such as computers or television sets managed in some instances by a media controller 107 (such as an infrared or RF remote control). Unicast traffic can also be exchanged between the media processors 106 and subsystems of the IPTV media system for services such as video-on-demand (VoD). It will be appreciated by one of ordinary skill in the art that the media devices 108 and/or portable communication devices 116 shown in FIG. 1 can be an integral part of the media processor 106 and can be communicatively coupled to the gateway 104. In this particular embodiment, an integral device such as described can receive, respond, process and present multicast or unicast media content.

The IPTV media system can be coupled to one or more computing devices 130 a portion of which can operate as a web server for providing portal services over an Internet Service Provider (ISP) network 132 to fixed line media devices 108 or portable communication devices 116 by way of a wireless access point 117 providing Wireless Fidelity or WiFi services, or cellular communication services (such as GSM, CDMA, UMTS, WiMAX, etc.). The devices 130 or elements coupled to the access element can serve to provide the network management and monitoring elements as further described herein.

A satellite broadcast television system can be used in place of the IPTV media system. In this embodiment, signals transmitted by a satellite 115 can be intercepted by a satellite dish receiver 131 coupled to building 102 which conveys media signals to the media processors 106. The media receivers 106 can be equipped with a broadband port to the ISP network 132. Although not shown, the communication system 100 can also be combined or replaced with analog or digital broadcast distributions systems such as cable TV systems.

FIG. 2 depicts an illustrative embodiment of a second communication system 200 for delivering media content. Communication system 200 can be overlaid or operably coupled with communication system 100 as another representative embodiment of said communication system. The system 200 includes a distribution switch/router system 228 at a central office 218. The distribution switch/router system 228 receives video data via a multicast television stream 230 from a second distribution switch/router 234 at an intermediate office 220. The multicast television stream 230 includes Internet Protocol (IP) data packets addressed to a multicast IP address associated with a television channel. The distribution switch/router system 228 can cache data associated with each television channel received from the intermediate office 220.

The distribution switch/router system 228 also receives unicast data traffic from the intermediate office 220 via a unicast traffic stream 232. The unicast traffic stream 232 includes data packets related to devices located at a particular residence, such as the residence 202. For example, the unicast traffic stream 232 can include data traffic related to a digital subscriber line, a telephone line, another data connection, or any combination thereof. To illustrate, the unicast traffic stream 232 can communicate data packets to and from a telephone 212 associated with a subscriber at the residence 202. The telephone 212 can be a Voice over Internet Protocol (VoIP) telephone. To further illustrate, the unicast traffic stream 232 can communicate data packets to and from a personal computer 210 at the residence 202 via one or more data routers 208. In an additional illustration, the unicast traffic stream 232 can communicate data packets to and from a set-top box device, such as the set-top box devices 204, 206. The unicast traffic stream 232 can communicate data packets to and from the devices located at the residence 202 via one or more residential gateways 214 associated with the residence 202.

The distribution switch/router system 228 can send data to one or more access switch/router systems 226. The access switch/router system 226 can include or be included within a service area interface 216. In a particular embodiment, the access switch/router system 226 can include a DSLAM. The access switch/router system 226 can receive data from the distribution switch/router system 228 via a broadcast television (BTV) stream 222 and a plurality of unicast subscriber traffic streams 224. The BTV stream 222 can be used to communicate video data packets associated with a multicast stream.

For example, the BTV stream 222 can include a multicast virtual local area network (VLAN) connection between the distribution switch/router system 228 and the access switch/router system 226. Each of the plurality of subscriber traffic streams 224 can be used to communicate subscriber specific data packets. For example, the first subscriber traffic stream can communicate data related to a first subscriber, and the nth subscriber traffic stream can communicate data related to an nth subscriber. Each subscriber to the system 200 can be associated with a respective subscriber traffic stream 224. The subscriber traffic stream 224 can include a subscriber VLAN connection between the distribution switch/router system 228 and the access switch/router system 226 that is associated with a particular set-top box device 204, 206, a particular residence 202, a particular residential gateway 214, another device associated with a subscriber, or any combination thereof.

In an illustrative embodiment, a set-top box device, such as the set-top box device 204, receives a channel change command from an input device, such as a remoter control device. The channel change command can indicate selection of an IPTV channel. After receiving the channel change command, the set-top box device 204 generates channel selection data that indicates the selection of the IPTV channel. The set-top box device 204 can send the channel selection data to the access switch/router system 226 via the residential gateway 214. The channel selection data can include an Internet Group Management Protocol (IGMP) Join request. In an illustrative embodiment, the access switch/router system 226 can identify whether it is joined to a multicast group associated with the requested channel based on information in the IGMP Join request.

If the access switch/router system 226 is not joined to the multicast group associated with the requested channel, the access switch/router system 226 can generate a multicast stream request. The multicast stream request can be generated by modifying the received channel selection data. In an illustrative embodiment, the access switch/router system 226 can modify an IGMP Join request to produce a proxy IGMP Join request. The access switch/router system 226 can send the multicast stream request to the distribution switch/router system 228 via the BTV stream 222. In response to receiving the multicast stream request, the distribution switch/router system 228 can send a stream associated with the requested channel to the access switch/router system 226 via the BTV stream 222.

FIG. 3 depicts an illustrative embodiment of a third communication system 300 for delivering media content. Communication system 300 can be overlaid or operably coupled with communication systems 100-200 as another representative embodiment of said communication systems. As shown, the system 300 can include a client facing tier 302, an application tier 304, an acquisition tier 306, and an operations and management tier 308. Each tier 302, 304, 306, 308 is coupled to a private network 310, such as a network of common packet-switched routers and/or switches; to a public network 312, such as the Internet; or to both the private network 310 and the public network 312. For example, the client-facing tier 302 can be coupled to the private network 310. Further, the application tier 304 can be coupled to the private network 310 and to the public network 312. The acquisition tier 306 can also be coupled to the private network 310 and to the public network 312. Additionally, the operations and management tier 308 can be coupled to the public network 312.

As illustrated in FIG. 3, the various tiers 302, 304, 306, 308 communicate with each other via the private network 310 and the public network 312. For instance, the client-facing tier 302 can communicate with the application tier 304 and the acquisition tier 306 via the private network 310. The application tier 304 can communicate with the acquisition tier 306 via the private network 310. Further, the application tier 304 can communicate with the acquisition tier 306 and the operations and management tier 308 via the public network 312. Moreover, the acquisition tier 306 can communicate with the operations and management tier 308 via the public network 312. In a particular embodiment, elements of the application tier 304, including, but not limited to, a client gateway 350, can communicate directly with the client-facing tier 302.

The client-facing tier 302 can communicate with user equipment via an access network 366, such as an IPTV access network. In an illustrative embodiment, customer premises equipment (CPE) 314, 322 can be coupled to a local switch, router, or other device of the access network 366. The client-facing tier 302 can communicate with a first representative set-top box device 316 via the first CPE 314 and with a second representative set-top box device 324 via the second CPE 322. In a particular embodiment, the first representative set-top box device 316 and the first CPE 314 can be located at a first customer premise, and the second representative set-top box device 324 and the second CPE 322 can be located at a second customer premise.

In another particular embodiment, the first representative set-top box device 316 and the second representative set-top box device 324 can be located at a single customer premise, both coupled to one of the CPE 314, 322. The CPE 314, 322 can include routers, local area network devices, modems, such as digital subscriber line (DSL) modems, any other suitable devices for facilitating communication between a set-top box device and the access network 366, or any combination thereof.

In an illustrative embodiment, the client-facing tier 302 can be coupled to the CPE 314, 322 via fiber optic cables. In another illustrative embodiment, the CPE 314, 322 can include DSL modems that are coupled to one or more network nodes via twisted pairs, and the client-facing tier 302 can be coupled to the network nodes via fiber-optic cables. Each set-top box device 316, 324 can process data received via the access network 366, via a common IPTV software platform.

The first set-top box device 316 can be coupled to a first external display device, such as a first television monitor 318, and the second set-top box device 324 can be coupled to a second external display device, such as a second television monitor 326. Moreover, the first set-top box device 316 can communicate with a first remote control 320, and the second set-top box device 324 can communicate with a second remote control 328. The set-top box devices 316, 324 can include IPTV set-top box devices; video gaming devices or consoles that are adapted to receive IPTV content; personal computers or other computing devices that are adapted to emulate set-top box device functionalities; any other device adapted to receive IPTV content and transmit data to an IPTV system via an access network; or any combination thereof.

In an illustrative, non-limiting embodiment, each set-top box device 316, 324 can receive data, video, or any combination thereof, from the client-facing tier 302 via the access network 366 and render or display the data, video, or any combination thereof, at the display device 318, 326 to which it is coupled. In an illustrative embodiment, the set-top box devices 316, 324 can include tuners that receive and decode television programming signals or packet streams for transmission to the display devices 318, 326. Further, the set-top box devices 316, 324 can each include a STB processor 370 and a STB memory device 372 that is accessible to the STB processor 370. In one embodiment, a computer program, such as the STB computer program 374, can be embedded within the STB memory device 372.

In an illustrative embodiment, the client-facing tier 302 can include a client-facing tier (CFT) switch 330 that manages communication between the client-facing tier 302 and the access network 366 and between the client-facing tier 302 and the private network 310. As illustrated, the CFT switch 330 is coupled to one or more distribution servers, such as Distribution-servers (D-servers) 332, that store, format, encode, replicate, or otherwise manipulate or prepare video content for communication from the client-facing tier 302 to the set-top box devices 316, 324. The CFT switch 330 can also be coupled to a terminal server 334 that provides terminal devices with a point of connection to the IPTV system 300 via the client-facing tier 302.

In a particular embodiment, the CFT switch 330 can be coupled to a VoD server 336 that stores or provides VoD content imported by the IPTV system 300. Further, the CFT switch 330 is coupled to one or more video servers 380 that receive video content and transmit the content to the set-top boxes 316, 324 via the access network 366. The client-facing tier 302 may include a CPE management server 382 that manages communications to and from the CPE 314 and the CPE 322. For example, the CPE management server 382 may collect performance data associated with the set-top box devices 316, 324 from the CPE 314 or the CPE 322 and forward the collected performance data to a server associated with the operations and management tier 308.

In an illustrative embodiment, the client-facing tier 302 can communicate with a large number of set-top boxes, such as the representative set-top boxes 316, 324, over a wide geographic area, such as a metropolitan area, a viewing area, a statewide area, a regional area, a nationwide area or any other suitable geographic area, market area, or subscriber or customer group that can be supported by networking the client-facing tier 302 to numerous set-top box devices. In a particular embodiment, the CFT switch 330, or any portion thereof, can include a multicast router or switch that communicates with multiple set-top box devices via a multicast-enabled network.

As illustrated in FIG. 3, the application tier 304 can communicate with both the private network 310 and the public network 312. The application tier 304 can include a first application tier (APP) switch 338 and a second APP switch 340. In a particular embodiment, the first APP switch 338 can be coupled to the second APP switch 340. The first APP switch 338 can be coupled to an application server 342 and to an OSS/BSS gateway 344. In a particular embodiment, the application server 342 can provide applications to the set-top box devices 316, 324 via the access network 366, which enable the set-top box devices 316, 324 to provide functions, such as interactive program guides, video gaming, display, messaging, processing of VoD material and other IPTV content, etc. In an illustrative embodiment, the application server 342 can provide location information to the set-top box devices 316, 324. In a particular embodiment, the OSS/BSS gateway 344 includes operation systems and support (OSS) data, as well as billing systems and support (BSS) data. In one embodiment, the OSS/BSS gateway 344 can provide or restrict access to an OSS/BSS server 364 that stores operations and billing systems data.

The second APP switch 340 can be coupled to a domain controller 346 that provides Internet access, for example, to users at their computers 368 via the public network 312. For example, the domain controller 346 can provide remote Internet access to IPTV account information, e-mail, personalized Internet services, or other online services via the public network 312. In addition, the second APP switch 340 can be coupled to a subscriber and system store 348 that includes account information, such as account information that is associated with users who access the IPTV system 300 via the private network 310 or the public network 312. In an illustrative embodiment, the subscriber and system store 348 can store subscriber or customer data and create subscriber or customer profiles that are associated with IP addresses, stock-keeping unit (SKU) numbers, other identifiers, or any combination thereof, of corresponding set-top box devices 316, 324. In another illustrative embodiment, the subscriber and system store can store data associated with capabilities of set-top box devices associated with particular customers.

In a particular embodiment, the application tier 304 can include a client gateway 350 that communicates data directly to the client-facing tier 302. In this embodiment, the client gateway 350 can be coupled directly to the CFT switch 330. The client gateway 350 can provide user access to the private network 310 and the tiers coupled thereto. In an illustrative embodiment, the set-top box devices 316, 324 can access the IPTV system 300 via the access network 366, using information received from the client gateway 350. User devices can access the client gateway 350 via the access network 366, and the client gateway 350 can allow such devices to access the private network 310 once the devices are authenticated or verified. Similarly, the client gateway 350 can prevent unauthorized devices, such as hacker computers or stolen set-top box devices from accessing the private network 310, by denying access to these devices beyond the access network 366.

For example, when the first representative set-top box device 316 accesses the client-facing tier 302 via the access network 366, the client gateway 350 can verify subscriber information by communicating with the subscriber and system store 348 via the private network 310. Further, the client gateway 350 can verify billing information and status by communicating with the OSS/BSS gateway 344 via the private network 310. In one embodiment, the OSS/BSS gateway 344 can transmit a query via the public network 312 to the OSS/BSS server 364. After the client gateway 350 confirms subscriber and/or billing information, the client gateway 350 can allow the set-top box device 316 to access IPTV content and VoD content at the client-facing tier 302. If the client gateway 350 cannot verify subscriber information for the set-top box device 316, because it is connected to an unauthorized twisted pair, the client gateway 350 can block transmissions to and from the set-top box device 316 beyond the access network 366.

As indicated in FIG. 3, the acquisition tier 306 includes an acquisition tier (AQT) switch 352 that communicates with the private network 310. The AQT switch 352 can also communicate with the operations and management tier 308 via the public network 312. In a particular embodiment, the AQT switch 352 can be coupled to one or more live Acquisition-servers (A-servers) 354 that receive or acquire television content, movie content, advertisement content, other video content, or any combination thereof, from a broadcast service 356, such as a satellite acquisition system or satellite head-end office. In a particular embodiment, the live acquisition server 354 can transmit content to the AQT switch 352, and the AQT switch 352 can transmit the content to the CFT switch 330 via the private network 310.

In an illustrative embodiment, content can be transmitted to the D-servers 332, where it can be encoded, formatted, stored, replicated, or otherwise manipulated and prepared for communication from the video server(s) 380 to the set-top box devices 316, 324. The CFT switch 330 can receive content from the video server(s) 380 and communicate the content to the CPE 314, 322 via the access network 366. The set-top box devices 316, 324 can receive the content via the CPE 314, 322, and can transmit the content to the television monitors 318, 326. In an illustrative embodiment, video or audio portions of the content can be streamed to the set-top box devices 316, 324.

Further, the AQT switch 352 can be coupled to a video-on-demand importer server 358 that receives and stores television or movie content received at the acquisition tier 306 and communicates the stored content to the VoD server 336 at the client-facing tier 302 via the private network 310. Additionally, at the acquisition tier 306, the VoD importer server 358 can receive content from one or more VoD sources outside the IPTV system 300, such as movie studios and programmers of non-live content. The VoD importer server 358 can transmit the VoD content to the AQT switch 352, and the AQT switch 352, in turn, can communicate the material to the CFT switch 330 via the private network 310. The VoD content can be stored at one or more servers, such as the VoD server 336.

When users issue requests for VoD content via the set-top box devices 316, 324, the requests can be transmitted over the access network 366 to the VoD server 336, via the CFT switch 330. Upon receiving such requests, the VoD server 336 can retrieve the requested VoD content and transmit the content to the set-top box devices 316, 324 across the access network 366, via the CFT switch 330. The set-top box devices 316, 324 can transmit the VoD content to the television monitors 318, 326. In an illustrative embodiment, video or audio portions of VoD content can be streamed to the set-top box devices 316, 324.

FIG. 3 further illustrates that the operations and management tier 308 can include an operations and management tier (OMT) switch 360 that conducts communication between the operations and management tier 308 and the public network 312. In the embodiment illustrated by FIG. 3, the OMT switch 360 is coupled to a TV2 server 362. Additionally, the OMT switch 360 can be coupled to an OSS/BSS server 364 and to a simple network management protocol monitor 386 that monitors network devices within or coupled to the IPTV system 300. In a particular embodiment, the OMT switch 360 can communicate with the AQT switch 352 via the public network 312.

The OSS/BSS server 364 may include a cluster of servers, such as one or more CPE data collection servers that are adapted to request and store operations systems data, such as performance data from the set-top box devices 316, 324. In an illustrative embodiment, the CPE data collection servers may be adapted to analyze performance data to identify a condition of a physical component of a network path associated with a set-top box device, to predict a condition of a physical component of a network path associated with a set-top box device, or any combination thereof.

In an illustrative embodiment, the live acquisition server 354 can transmit content to the AQT switch 352, and the AQT switch 352, in turn, can transmit the content to the OMT switch 360 via the public network 312. In this embodiment, the OMT switch 360 can transmit the content to the TV2 server 362 for display to users accessing the user interface at the TV2 server 362. For example, a user can access the TV2 server 362 using a personal computer 368 coupled to the public network 312.

It should be apparent to one of ordinary skill in the art from the foregoing media communication system embodiments that other suitable media communication systems for distributing broadcast media content as well as peer-to-peer exchange of content can be applied to the present disclosure.

FIG. 4 depicts an illustrative embodiment of a communication system 400 employing an IP Multimedia Subsystem (IMS) network architecture. Communication system 400 can be overlaid or operably coupled with communication systems 100-300 as another representative embodiment of said communication systems.

The communication system 400 can comprise a Home Subscriber Server (HSS) 440, a tElephone NUmber Mapping (ENUM) server 430, and network elements of an IMS network 450. The IMS network 450 can be coupled to IMS compliant communication devices (CD) 401, 402 or a Public Switched Telephone Network (PSTN) CD 403 using a Media Gateway Control Function (MGCF) 420 that connects the call through a common PSTN network 460.

IMS CDs 401, 402 register with the IMS network 450 by contacting a Proxy Call Session Control Function (P-CSCF) which communicates with a corresponding Serving CSCF (S-CSCF) to register the CDs with an Authentication, Authorization and Accounting (AAA) supported by the HSS 440. To accomplish a communication session between CDs, an originating IMS CD 401 can submit a Session Initiation Protocol (SIP INVITE) message to an originating P-CSCF 404 which communicates with a corresponding originating S-CSCF 406. The originating S-CSCF 406 can submit the SIP INVITE message to an application server (AS) such as reference 410 that can provide a variety of services to IMS subscribers. For example, the application server 410 can be used to perform originating treatment functions on the calling party number received by the originating S-CSCF 406 in the SIP INVITE message.

Originating treatment functions can include determining whether the calling party number has international calling services, and/or is requesting special telephony features (such as *72 forward calls, *73 cancel call forwarding, *67 for caller ID blocking, and so on). Additionally, the originating S-CSCF 406 can submit queries to the ENUM system 430 to translate an E.164 telephone number to a SIP Uniform Resource Identifier (URI) if the targeted communication device is IMS compliant. If the targeted communication device is a PSTN device, the ENUM system 430 will respond with an unsuccessful address resolution and the S-CSCF 406 will forward the call to the MGCF 420 via a Breakout Gateway Control Function (BGCF) 419.

When the ENUM server 430 returns a SIP URI, the SIP URI is used by an Interrogating CSCF (I-CSCF) 407 to submit a query to the HSS 440 to identify a terminating S-CSCF 414 associated with a terminating IMS CD such as reference 402. Once identified, the I-CSCF 407 can submit the SIP INVITE to the terminating S-CSCF 414 which can call on an application server 411 similar to reference 410 to perform the originating treatment telephony functions described earlier. The terminating S-CSCF 414 can then identify a terminating P-CSCF 416 associated with the terminating CD 402. The P-CSCF 416 then signals the CD 402 to establish communications. The aforementioned process is symmetrical. Accordingly, the terms “originating” and “terminating” in FIG. 4 can be interchanged.

FIG. 5 depicts an illustrative embodiment of a portal 530. The portal 530 can be used for managing services of communication systems 100-400. The portal 530 can be accessed by a Uniform Resource Locator (URL) with a common Internet browser such as Microsoft's Internet Explorer using an Internet-capable communication device such as references 108, 116, or 210 of FIGS. 1-2. The portal 530 can be configured to access a media processor such as references 106, 204, 206, 316, and 324 of FIGS. 1-3 and services managed thereby such as a Digital Video Recorder (DVR), an Electronic Programming Guide (EPG), VoD catalog, a personal catalog (such as personal videos, pictures, audio recordings, etc.) stored in the STB, a personal computer or server in a user's home or office, and so on.

FIG. 6 depicts an exemplary embodiment of a communication device 600. Communication device 600 can be a representative portion of any of the aforementioned communication devices of FIGS. 1-4. The communication device 604 can comprise a wireline and/or wireless transceiver 602 (herein transceiver 602), a user interface (UI) 604, a power supply 614, a location receiver 616, and a controller 606 for managing operations thereof. The transceiver 602 can support short-range or long-range wireless access technologies such as a Bluetooth wireless access protocol, a Wireless Fidelity (WiFi) access protocol, a Digital Enhanced Cordless Telecommunications (DECT) wireless access protocol, cellular, software defined radio (SDR) and/or WiMAX technologies, just to mention a few. Cellular technologies can include, for example, CDMA-1X, UMTS/HSDPA, GSM/GPRS, TDMA/EDGE, EV/DO, and next generation technologies as they arise.

The transceiver 602 can also support common wireline access technologies such as circuit-switched wireline access technologies, packet-switched wireline access technologies, or combinations thereof. PSTN can represent one of the common circuit-switched wireline access technologies. Voice over Internet Protocol (VoIP), and IP data communications can represent some of the commonly available packet-switched wireline access technologies. The transceiver 602 can also be adapted to support IP Multimedia Subsystem (IMS) protocol for interfacing to an IMS network that can combine PSTN and VoIP communication technologies.

The UI 604 can include a depressible or touch-sensitive keypad 608 and a navigation mechanism such as a roller ball, joystick, mouse, and/or navigation disk for manipulating operations of the communication device 600. The keypad 608 can be an integral part of a housing assembly of the communication device 600 or an independent device operably coupled thereto by a tethered wiring interface (such as a USB) or a wireless interface supporting for example Bluetooth. The keypad 608 can represent a numeric dialing keypad commonly used by phones, and/or a Qwerty keypad with alphanumeric keys.

The UI 604 can further include a display 610 such as monochrome or color LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode) or other suitable display technology for conveying images to the end user of the communication device 600. In an embodiment where the display 610 is touch-sensitive, a portion or all of the keypad 608 can be presented by way of the display. The UI 604 can also include an audio system 612 that utilizes common audio technology for conveying low volume audio (such as audio heard only in the proximity of a human ear) and high volume audio (such as speakerphone for hands free operation). The audio system 612 can further include a microphone for receiving audible signals of an end user.

The power supply 614 can utilize common power management technologies such as replaceable and rechargeable batteries, supply regulation technologies, and charging system technologies for supplying energy to the components of the communication device 600 to facilitate long-range or short-range portable applications. The location receiver 616 utilize common location technology such as a global positioning system (GPS) receiver for identifying a location of the communication device 100, thereby facilitating common location services such as navigation. The controller 606 can utilize computing technologies such as a microprocessor and/or digital signal processor (DSP) with associated storage memory such a Flash, ROM, RAM, SRAM, DRAM or other storage technologies.

FIG. 7 depicts a network and a diagnostic system 700 that operates in accordance with various embodiments herein. The system 700 can include a rules engine 702 having diagnostic code or flows 704 that operate in accordance with the method further discussed with respect to FIGS. 8 and 9. The rules engine 702 can be in communication with not only the customer 706, but an electronic maintenance crew 708, a work center 710 or a local exchange carrier 712. The rules engine 702 can also be in communication with a customer 714, an electronic maintenance crew 716, a automated maintenance system (PAM) 718 or a workcenter 720 via a service assurance system 726 such as a trouble ticketing system or RUBY system. The rules engine 702 can test the Layer 4 network by obtaining information from customer's layer 4 data stored in a server 724 test system and comparing such layer 4 data with inventory data at a inventory system 722 such as a Data Base of Record (DBOR) inventory system for example.

As a service provider that offers various data services such as BVOIP, IPTV, and other IP-based video services to customers worldwide, a service provider should maintain better control of the traffic types and ensure the quality of service. In this regard, AT&T is employing Layer 4 policy-oriented routing techniques including Class of Service (COS), Route Group (RG), Policy Map, Type of Service (TOS), and other routing functions. Since a different service demands a different set of routing policies including COS, RG, Route Target, BGP Community Values, and Route Map actions, it inevitably makes service assurance maintenance work more difficult and more challenging as the various networks and services proliferate.

In case of Layer 4 routing failure, customer networks are up and running but they may still lose their routes as well as their services. AT&T, like other telecommunication companies, has come up with techniques as described herein to find the root cause and resolve the problems as soon as possible to minimize the downtime and to mitigate the impact on customer services. The embodiments herein enable troubleshooting the Layer 4 problem automatically, thanks to its built-in expert rules. It locates the root cause and sends the diagnostic result to an appropriate workcenter just in minutes or perhaps seconds in future versions depending on the problems found. Without this automated tool, technicians would spend hours digging out the Layer 4 network configuration or customer configuration problems. Technicians would have to check various inventory systems and send various CLI commands to the network to verify the various Layer 4 routing configurations, which is time-consuming and labor-intensive. Although technicians may have access to the various inventory systems and can retrieve the live routing data from the various routers, it also requires certain expertise in order to interpret the Layer 4 issue from various sources and pinpoint the root cause in a timely fashion. Highly trained technicians are always scarce and difficult to recruit and the embodiments herein can either resolve such issues or provide a further aide to such network technicians.

When Layer 4 routing fails, a customer's Layer 1, 2, and 3 networks can still be active but the customers will still lose their services. Embodiments herein are able to troubleshoot the Layer 4 problem automatically, thanks to built-in expert rules. It locates the root cause and sends the diagnostic result to an appropriate workcenter just in minutes or potentially faster.

Referring to the flow chart of FIG. 8, method 800 illustrates an exemplary method of how such a diagnostic system can operate. The system can first automatically check Layer 1, 2, and 3 test results at 802 and automatically retrieve inventory data from inventory system like inventory system at 804. The method 800 can then automatically retrieve a customer's Layer 4 data from live router by executing show COS interface command or show policy interface command at 806. At 808, COS value can be compared with that of inventory system to pinpoint any mismatch. In any event, the method can automatically create an alert if there is a mismatch between the COS value and the value from the inventory system at 810. The method at 812 can also automatically notify a customer care center if there is a COS value mismatch. The method can also automatically notify a network care center if there s any network configuration problem. The system at 814 can also automatically retrieve and compare RG data, Community values, Route Target (RT) value by executing at 816 a Show bgp neighbor vrf command and can further automatically compare live route data of Route Groups, Route Target, Community List/value/action, and Route Map Action with those from inventory system to find out any discrepancy.

In a specific example, such a system can automatically check COS data against the service that AT&T or another carrier offers to the customer. For example, COS1 is for highly sensitive multimedia service while COS2 is for video and critical data service. The system can automatically notify a customer care center if the COS value does not match the service offered. For example, video service has COS4 as Quality of Service though COS1 or COS2 for video transmission may be required. The method can also automatically check route priority, TOS, and weighted queuing against business needs. Such a system or method can also automatically auto-close a trouble ticket if no problem is found. Such a method and system would enable a “Zero Touch” service assurance automation and improve operations efficiency and further support a Policy-driven Layer 4 routing initiative.

FIG. 9 depicts an illustrative method 850 operating in portions of communication systems 100-400. Method 850 begins at 851 where a VPN Layer 4 diagnostic routine begins. Test results for Layers 1, 2, and 3 or the lower layers are obtained at 852. At decision step 853, if the lower layer tests are not ok, then the system determines that the problem is not necessarily related to a layer 4 issue and the method continues with lower layer troubleshooting at step 854. If all the lower layer tests are ok at 853, then layer 4 inventory data is retrieved including COS data, Route Group, Community List data and other similar data at 855. A Show COS interface command with local interface string can be executed at 856 and the Live COS data can be mapped to the COS data from the inventory system at 857. At decision step 858, if there is COS mismatch, then the network care workcenter is notified for a network configuration problem at 859. If there is no COS mismatch at 859, then a show IP BGP neighbor command can be executed starting with VRF and CER IP address to get the community data from the network at 860. At 861, the community data is compared with the data from the inventory system including community value, Route Map Action, Route Target (where Live Route data should be synchronized with the inventory route data). Once again, at a mismatch is determined at a decision step 862 following the comparison of 861. If a mismatch is found, then the network care workcenter is notified at 859. If no mismatch is found, then a Show community list command is executed to check the community value at 863. If the route is denied at decision block 864, then the customer care center is notified of possible wrong community value. If the route is not denied at 864, then a Show IP VRF detail command is executed at 866 to check a route target value. If an imported Route Target value equals an imported Route Target value at decision block 867, then the Network Care workcenter is notified of a configuration problem at 868. If the imported Route Target value does not equal the imported Route Target value at decision block 867, then Carrier service offering at checked at 869 and Quality of Service (QoS) is checked at 870. At decision block 871, if the service is voice or video related, then the type of class of service is determined at 872. If the COS is not COS1 (EF) or COS2 (BH), then the Customer Care workcenter is notified that voice or video demands COS2 or higher QoS. If the COS is COS1 or COS2 at 872, then a Show access list command is executed at 874 to check ACL, priority, TOS, and queuing. At 875, the business needs can be checked against the Policy, QoS, COS, and TOS. If the business needs are being met at decision step 876, then a trouble ticket can automatically be closed at 878 and the customer can be notified of no trouble found. If the business needs are not being met at decision block 876, then the method can notify the customer and workcenter to negotiate over the Policy, COS or other parameters as needed.

Upon reviewing the aforementioned embodiments, it would be evident to an artisan with ordinary skill in the art that said embodiments can be modified, reduced, or enhanced without departing from the scope and spirit of the claims described below. For example, a list of inquiries and data to be gathered for an alarm can be configurable and based on trap number, switch type, alarm type, alarm text, or alarm reason.

Other suitable modifications can be applied to the present disclosure without departing from the scope of the claims below. Accordingly, the reader is directed to the claims section for a fuller understanding of the breadth and scope of the present disclosure.

FIG. 10 depicts an illustrative diagrammatic representation of a machine in the form of a computer system 900 within which a set of instructions, when executed, may cause the machine to perform any one or more of the methodologies discussed above. In some embodiments, the machine operates as a standalone device. In some embodiments, the machine may be connected (using a network) to other machines. In a networked deployment, the machine may operate in the capacity of a server or a client user machine in server-client user network environment, or as a peer machine in a peer-to-peer (or distributed) network environment.

The machine may comprise a server computer, a client user computer, a personal computer (PC), a tablet PC, a laptop computer, a desktop computer, a control system, a network router, switch or bridge, or any machine capable of executing a set of instructions (sequential or otherwise) that specify actions to be taken by that machine. It will be understood that a device of the present disclosure includes broadly any electronic device that provides voice, video or data communication. Further, while a single machine is illustrated, the term “machine” shall also be taken to include any collection of machines that individually or jointly execute a set (or multiple sets) of instructions to perform any one or more of the methodologies discussed herein.

The computer system 900 may include a processor 902 (such as a central processing unit (CPU)), a graphics processing unit (GPU, or both), a main memory 904 and a static memory 906, which communicate with each other via a bus 908. The computer system 900 may further include a video display unit 910 (such as a liquid crystal display (LCD)), a flat panel, a solid state display, or a cathode ray tube (CRT)). The computer system 900 may include an input device 912 (such as a keyboard), a cursor control device 914 (such as a mouse), a disk drive unit 916, a signal generation device 918 (such as a speaker or remote control) and a network interface device 920.

The disk drive unit 916 may include a computer-readable medium 922 on which is stored one or more sets of instructions (such as software 924) embodying any one or more of the methodologies or functions described herein, including those methods illustrated above. The instructions 924 may also reside, completely or at least partially, within the main memory 904, the static memory 906, and/or within the processor 902 during execution thereof by the computer system 900. The main memory 904 and the processor 902 also may constitute computer-readable media.

Dedicated hardware implementations including, but not limited to, application specific integrated circuits, programmable logic arrays and other hardware devices can likewise be constructed to implement the methods described herein. Applications that may include the apparatus and systems of various embodiments broadly include a variety of electronic and computer systems. Some embodiments implement functions in two or more specific interconnected hardware modules or devices with related control and data signals communicated between and through the modules, or as portions of an application-specific integrated circuit. Thus, the example system is applicable to software, firmware, and hardware implementations.

In accordance with various embodiments of the present disclosure, the methods described herein are intended for operation as software programs running on a computer processor. Furthermore, software implementations can include, but not limited to, distributed processing or component/object distributed processing, parallel processing, or virtual machine processing can also be constructed to implement the methods described herein.

The present disclosure contemplates a machine readable medium containing instructions 924, or that which receives and executes instructions 924 from a propagated signal so that a device connected to a network environment 926 can send or receive voice, video or data, and to communicate over the network 926 using the instructions 924. The instructions 924 may further be transmitted or received over a network 926 via the network interface device 920.

While the computer-readable medium 922 is shown in an example embodiment to be a single medium, the term “computer-readable medium” should be taken to include a single medium or multiple media (such as a centralized or distributed database, and/or associated caches and servers) that store the one or more sets of instructions. The term “computer-readable medium” shall also be taken to include any medium that is capable of storing, encoding or carrying a set of instructions for execution by the machine and that cause the machine to perform any one or more of the methodologies of the present disclosure.

The term “computer-readable medium” shall accordingly be taken to include, but not be limited to: solid-state memories such as a memory card or other package that houses one or more read-only (non-volatile) memories, random access memories, or other re-writable (volatile) memories; magneto-optical or optical medium such as a disk or tape; and/or a digital file attachment to e-mail or other self-contained information archive or set of archives is considered a distribution medium equivalent to a tangible storage medium. Accordingly, the disclosure is considered to include any one or more of a computer-readable medium or a distribution medium, as listed herein and including art-recognized equivalents and successor media, in which the software implementations herein are stored.

Although the present specification describes components and functions implemented in the embodiments with reference to particular standards and protocols, the disclosure is not limited to such standards and protocols. Each of the standards for Internet and other packet switched network transmission (such as TCP/IP, UDP/IP, HTML, HTTP) represent examples of the state of the art. Such standards are periodically superseded by faster or more efficient equivalents having essentially the same functions. Accordingly, replacement standards and protocols having the same functions are considered equivalents.

The illustrations of embodiments described herein are intended to provide a general understanding of the structure of various embodiments, and they are not intended to serve as a complete description of all the elements and features of apparatus and systems that might make use of the structures described herein. Many other embodiments will be apparent to those of skill in the art upon reviewing the above description. Other embodiments may be utilized and derived therefrom, such that structural and logical substitutions and changes may be made without departing from the scope of this disclosure. Figures are also merely representational and may not be drawn to scale. Certain proportions thereof may be exaggerated, while others may be minimized. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense.

Such embodiments of the inventive subject matter may be referred to herein, individually and/or collectively, by the term “invention” merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Thus, although specific embodiments have been illustrated and described herein, it should be appreciated that any arrangement calculated to achieve the same purpose may be substituted for the specific embodiments shown. This disclosure is intended to cover any and all adaptations or variations of various embodiments. Combinations of the above embodiments, and other embodiments not specifically described herein, will be apparent to those of skill in the art upon reviewing the above description.

The Abstract of the Disclosure is provided to comply with 37 C.F.R. §1.72(b), requiring an abstract that will allow the reader to quickly ascertain the nature of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoing Detailed Description, it can be seen that various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separately claimed subject matter. 

1. A method, comprising: automatically checking Layer 1, Layer 2, and Layer 3 test results of an IPTV network or iTV network; automatically retrieving inventory data from an inventory system; automatically retrieving a customer's Layer 4 data from a live router by executing a show Class of Service (COS) interface command or show policy interface command; automatically comparing a COS value with a value from the inventory system to pinpoint any mismatch; and automatically creating an alert if there is a mismatch.
 2. The method of claim 1, wherein the inventory system is a database of record (DBOR) inventory system.
 3. The method of claim 1, wherein the method automatically notifies a customer care center if the COS value does not match a service offered corresponding to the value from the inventory system.
 4. The method of claim 1, wherein the method automatically retrieves Route Group (RG) data, Border Gateway Protocol (BGP) Community values, and Route Target (RT) values by executing a Show BGP neighbor VPN Routing and Forwarding (VRF) command.
 5. The method of claim 1, wherein the method automatically compares live route data of Route Groups, Route Target, Community List/value/action, and Route Map Action with data from the inventory system to find a discrepancy.
 6. The method of claim 1, wherein the method automatically notifies a network care center if any network configuration problem is determined.
 7. The method of claim 1, wherein the method automatically checks for an inconsistent COS value and automatically notifies a customer care center if the inconsistent COS value exists.
 8. The method of claim 1, wherein the method automatically checks route priority, type of service (TOS), and weighted queuing against a stated business requirement.
 9. The method of claim 1, wherein the method automatically closes a trouble ticket if no problem is found.
 10. The method of claim 1, wherein the method is used for troubleshooting IPTV networks.
 11. The method of claim 1, wherein the method is used for troubleshooting iTV networks using specific steps related to Class of Service levels.
 12. A method, comprising: automatically checking lower level layer test results of an Internet Protocol TV or interactive TV network; automatically retrieving inventory data from an inventory system; automatically retrieving a Layer 4 data from a live router by executing a show Class of Service (COS) interface command or show policy interface command; automatically comparing a COS value with a value from the inventory system to determine a mismatch; and automatically creating an alert if the mismatch exists.
 13. The method of claim 12, wherein the inventory system is a DBOR inventory system.
 14. The method of claim 12, wherein the method automatically retrieves Route Group (RG) data, Border Gateway Protocol (BGP) Community values, and Route Target (RT) values by executing a Show BGP neighbor VPN Routing and Forwarding (VRF) command.
 15. The method of claim 12, wherein the method automatically compares live route data of Route Groups, Route Target, Community List/value/action, and Route Map Action with data from the inventory system to find a discrepancy.
 16. The method of claim 12, wherein the method automatically notifies a network care center if any network configuration problem is determined.
 17. The method of claim 12, wherein the method automatically checks for an inconsistent COS value and automatically notifies a customer care center if the inconsistent COS value exists, wherein the method automatically checks route priority, type of service (TOS), and weighted queuing against a stated business requirement.
 18. A computer-readable storage medium, comprising computer instructions operable to: automatically check Layer 1, Layer 2, and Layer 3 test results of a network; automatically retrieve inventory data from an inventory system; automatically retrieve a customer's Layer 4 data from a live router by executing a show Class of Service (COS) interface command or show policy interface command; automatically compare a COS value with a value from the inventory system to pinpoint any mismatch; and automatically create an alert if there is a mismatch.
 19. The computer readable storage medium of claim 18, wherein the computer readable storage medium comprises computer instructions to automatically retrieve Route Group (RG) data, Border Gateway Protocol (BGP) Community values, and Route Target (RT) values by executing a Show BGP neighbor VPN Routing and Forwarding (VRF) command.
 20. The computer readable storage medium of claim 17, wherein the computer readable storage medium comprises computer instructions to automatically compare live route data of Route Groups, Route Target, Community List/value/action, and Route Map Action with data from the inventory system to find a discrepancy.
 21. The computer readable storage medium of claim 17, wherein the computer readable storage medium comprises computer instructions to automatically notify a network care center if any network configuration problem is determined and to automatically check for an inconsistent COS value and automatically notify a customer care center if the inconsistent COS value exists.
 22. A system, comprising a controller to: automatically check lower level layer test results of an Internet Protocol TV or interactive TV network; automatically retrieve inventory data from an inventory system; automatically retrieve a Layer 4 data from a live router by executing a show Class of Service (COS) interface command; automatically compare a COS value with a value from the inventory system to determine a mismatch; and automatically create an alert if the mismatch exists.
 23. The system of claim 22, wherein the method automatically retrieves Route Group (RG) data, Border Gateway Protocol (BGP) Community values, and Route Target (RT) values by executing a Show BGP neighbor VPN Routing and Forwarding (VRF) command.
 24. The system of claim 22, wherein the system automatically compares live route data of Route Groups, Route Target, Community List/value/action, and Route Map Action with data from the inventory system to find a discrepancy and automatically notifies a customer care center if an inconsistent COS value exists or if a discrepancy exists with the live route data.
 25. The system of claim 22, wherein the system automatically notifies a network care center if any network configuration problem is determined. 